Endless movable grate for furnaces.



F. GIRTANNER. ENDLEss MOVABLE GRATE FOB PUBNAGES.

APPLICATION FILED JULY 8, 1911. y

Patented Jan. 14, 1913.

UNrrEnsTi-rrns FFQQ FREDERICK GIRTANNEB., OF ST. LOUIS, MISSOURI, ASSIGNORiT LACLEOE-CHRISTY CLAY PRODUCTS COMPANY, OF ST. LOUIS, MISSOURI, A ORPORATION 0F MISSOURI.

ENDLESS MOVABLE GRATE FOR FURNACES.

Specification of Letters latents;

raten-tea .tentait-1913.

application ined .nay s, 1911. seriai ad. ea'zllliea-t.4

` To all wlzom it 'may concern:

Be it known that I, FREDERICK Guaranizn, a citizen of the United States, residingin the city et' St. Louis and State of Missouri, have invented certain new and useful Improvements in Endless Movable Grates for l`L1r11aces,ot` which the following is a speeii'icatio'n.

This invention relates to endless movable gratos for furnaces thatare particularly adapted to the burning` of bituminous or semi-bituminous or coking coals; and the invention consists in the features, combinations, and details lot construction hereinafter described and claimed.

The principal object of the invention is to provide a simple, economical, and satisfactory endless movable grate t'or the burning ot bituminous coals'and the like; and it consists principally in a grate composed of tilting and non-tilting or relatively lixed sections alternately arranged, \vtih means Jfor kickingor raising the tree ends ot' the tilting sections as they move alongtheir operative path.

The invention consists Jfurther and finally in the features, combinations, and details of construction hereinafter set forth and described.

ln the accompanyingr drawing the figure illustrates one form of endless movable`0r traveling' grate in which this invention is capable of being embodied.

ln the art. to which this invention relates, it is well known that it has long' been desirable to provide an endless movable or traveliup grate ot such construction and arrangement that it will economically and automatically stoke the t'uel or break up any coking er eoked tuel which may be on the upper or operative part ol the grate. Further, it has long' been desirable to provide a `trate of such construction and arrangement that the sections thereotl may be independent of each other and so constructed as to be easily operated and at the same time very durable 1n operation. 'lo accomplish these results is the principal object ot thisanvention.

In constructing a grate in accordance with these improvennuts. a supporting' trame portion is provided having .sides 5. as shown vided with Wheels G for movingit in or out ot the furnace on the track 7. These tracks are arranged upon the bed S ot the furnace.

The supporting ramfiis further provitlfeatt'V With a shaft. l9 at eaclrend (only one ot which is shown) rotatably mounted in the side frame and provided with a plurality of supporting rotating sprocket Wheelv l0. An endless movable or traveling grate lis provided, formed `of grate links 11' and l2 stip.- ported upon, and 1in necessary instances also pivoted upon as Well as pivotally connected to the cross rods 13,13, which cross rods are 35,

provided with distance pieces 14.

To economically and automatically stolze as Well as break up any coking or coked fuel which may be restingT upon the upper or operative portion of the ,grate and While said grate is moving along its operative path, it is desired to make such grate of tilting sections 1Q and non-tilting or relatively fixed sections ll alternately arranged, as shown. The non-tilting sections are preferably arranged in double series. as shown, and therebet-Ween arc arranged the tilting sections l2. TheV tiltingY sections are perforated at each' end. and at or near one end are independ- ,ently and loosely pivoted upon their particular cross rods while the opposite free or tiltingY end is provided with an elongated slot 15 and depending projections 16 loosely engaging another set ot' the cross rods 13.

Arranged inunediately beneath the upper portion ot' the 4erate are a series ot rolls 1"t, placed preferably in undulated or Wave-like. arrangnunentso as to support. the grate with its bed ot fuel. These rolls are so arranged that they are contacted by the depending7 90 projections 1G on the tree ends ot the tilting irate Sections. and as the grate moves alongt its upper operative path these rolls act to lLick or raise the -tree ends ot the tilting sections shoyvnl upwardly into the mass ot' eoking or eoked fuel to hreak up or stoke the same; all of which will be understood and appreciated by those skilled in the art.

The operation of the parts is such that as lthe grate sections move alone' their upper 100 path they7 are given an undulatingr or n'avelike motion. which motion tends to break up and stoke the mass ot burningr tuel. and in addition the tilting sections are kicked up between the non-tiltingr or relatively tixed sections. thus kicking .small portions or in the drawing. and which is turther promasses ot the lun-nino tuel and tlislodginsr it in such manner that the atmospheric airl necessary to support combustion may more readily enter into the mass ot burning fuel. 11G

f herein shown end elesorihefl ype of furnace which this inenpeble of being used7 and the ,sie isnie may huve arranged n. baille plate 2O es or near the ie lurneee so ss to control lhe s. shorl rlisrenee in front u "./olecl et Q2, may be arranged fish Chains orsiniilar elements l.) f 'y which il; may he operated.

is preferably formeel at or L* er el" the furnace, between its und 529v end muy 1oe provided with li oenveyer lo Gerry the ashes out of i:- sss desirecl. elsiin1- u i nieehanienl sloker, e ehein grate nel supporting links incl treneconneoting seid links, Certain of engaging; lhe rocls Closely but i, nel others of seid links engaging the fimilerly abone enel of eeeh link slols engaging the rocls enl'l of each such link, seid lestveel inks having ezinxs unrgler the slots lein., escl shnlrnenl's under the fuel supnorlion of grate whereby the incli- .olefl links will have their slotted 'Weil up as 'the esinsbsss over the Y o .lier l Elf) nieenenlosl striker, e ehem grme fuel supporting links and transrofls eenneoing seid linksj certain. of

seifl links engaging the rorls closely liua loosely el; bolli enls of each link, encl others el said links engaging ssii?. rods closely leur. loosely et one end ol" eeeh link enel by ineens e. vertical slot es lne other enel eseh link7 lhe skilled. links being srrengeel along the length 'of 'the grate in alternation with the other class oli links, seid. slolfteel links having @sins 1nder the slo'ls therein, and supporling rollers uncler the fuel supporting portion 01"' seid chain grsle whereby the individuel slottecl links vvill have Jrheir slotted ends kicked up as Jthe csins psss over the rollers.

3. ln a mechanical Stoker, e. 'chain girate- Vslelionarv shells being staggered in height whereby lhe Chain grate is caused 'lio 'travel with annnrlulzilory movement, and eersin individuel' links lof the chain grate having;

means to Gonot with Said rollers to kiek seidlinks up Lshove she other links es hey pese over the rollers.

'lRllDEllCl Glrllllllllrll. ln the presence 01- C. l-lrmnvron? ll. G. FLETCHER., 

